Opportunity and Spirit Mars Rovers

Images give scientists more information on unusual sand features on Mars.

A new television documentary chronicles the stunning success of NASA's twin Mars rover.

Poor weather, dwindling power at Phoenix landing site forces spacecraft into safe mode.

Phoenix scientists begin shutting down heaters to keep lander alive longer.

MRO finds more recently-deposited water-bearing minerals on Mars.

Over the weekend, a dust storm blew over Phoenix's landing site, diminishing its solar power.

The longest-serving Mars probe receives a two-year mission extension.

With its time left on Mars dwindling, Phoenix investigates underneath rock.

Setting sun, freezing temperatures will likely spell the end for Phoenix mission.

Phoenix mission scientists will try to switch on lander's microphone, hear Mars.

As winter approaches, Mars lander squeezing in science, turning on mic.

NASA scientists sent commands to Phoenix to nudge aside a Martian rock.

After a two-year stay in Mar's Victoria Crater, NASA's Opportunity rover will be moving on to an even bigger playground.

As NASA turns 50, here's a look at some of its most memorable missions.

Phoenix team plans to get as many samples to lander as possible before Martian summer ends.

Phoenix lander detects changes in air humidity but finds on film of water on ground.

Phoenix images Martian clouds, analyzes deepest trench sample.

NASA's Mars rover Opportunity is moving on after a year at Victoria Crater.

The Mars rover Opportunity begins its ascent out of Victoria crater.

Phoenix lander begins extended mission as it digs deeper trench.